Samuel Rutherford 
Letters of the Rev. Samuel Rutherford, Late Professor of Divinity at St. Andrews [PDF ebook] 
With an Introductory Essay

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. To assist our inquiries into this most interesting subject, it is of importance to examine the different passages of Scripture in which this term is used, and to compare it with other terms which are frequently employed as synonymous with it.